Category Archives: Equipment

Sony A7R on Architecture Duty

I’ve been using the Sony A7r pretty heavily the past nine months, and I am continuously impressed with the IQ I’ve been able to get out of this thing. I thought I would post a recent example of how this … Continue reading

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The Sony A7r: Dealing with an Existential Camera Crisis

With all of the recent sound and fury on camera forums pertaining to the Sony A7r, and after many weeks of scrutinizing online samples, reading wildly varying opinions, and finally taking on extensive testing with an A7r of my own … Continue reading

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Perspective Correction: Lens vs. Software

I’ve been coming across a lot of discussion of tilt-shift lenses recently. One of the particular benefits of these lenses is the ability to apply perspective correction to a scene by shifting the lens up or down. This allows the … Continue reading

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Tamron 24-70 2.8 VC tested vs Sigma 24-70 2.8 HSM

So I was pretty excited about the new Tamron 24-70 lens with vibration compensation. I couldn’t wait to put it up against my Sigma 24-70 HSM and see just how much of an improvement it was. Unfortunately, things did not … Continue reading

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Dynamic range, Canon DSLRs, and Shadow Noise – Dealing With It

Thanks in no small part to the release of the Nikon D800 and its excellent Exmor sensor from Sony, shadow noise has once again become a hot topic on Canon forums. To provide a brief summary of the fracas: the … Continue reading

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Sigma 12-24mm II – Discussion on Distortion Correction

Here are a few additional examples illustrating the distortions in the new Sigma 12-24mm lens, and the distortion corrections applied with PTLens. First, the question has come up of how much of the image is lost around the edges as … Continue reading

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Sigma 12-24mm II Lens Review

The Setup When I saw that Sigma was going to be releasing an updated version of their 12-24mm lens, I was quite excited. As a long-time owner of the original version, I had found many creative uses for it, both … Continue reading

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